DU -
First off remember he is going to blame and project all of his negativity on you. This is HIS issue. You really need to ignore this or as other would say detach. He is going to project his negativity on you. This is NOT your fault - remember that.

Also remember....

1) do what YOU want to do
2) his issue are HIS issues not yours
3) you will make it thru this
4) you are exceptional - that fact that he cannot see this right now is HIS issue.

Keep your head and ignore his crisis.

"The difficulties of Life are intended to make us BETTER,not bitter".
"Fear is a prison, where you are the jailer. FREE YOURSELF!"
"Life is usually all about how you handle Plan B." - Jack3Beans